BASIC PROBLEMS
Check that everything is properly plugged in, and that there is power being supplied to your controller (Lights come on - Thermocouples are reading temperatures - Zones not accidentally set for "Percentage" mode. Check that cables are not damaged, and that no wires have been pulled out accidentally. Check that the 'super-fast' fuses have not blown.
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01
There are a couple of things you can check before calling us or sending us your unit for repair.
FAULT-FINDING
02
SUPPLY PROBLEMS
Please ensure that all 3 phases are supplying voltage. A Neutral MUST be connected from your supply to the controller at all times. Failure to do this will result in 380 vac being applied across the 220 vac inputs, permanently damaging the unit. Many mains supplies have only a 4-conductor feed - phase 1/phase 2/phase 3/Earth. So please check and make sure that your Neutral is connected!
03
THERMOCOUPLE PROBLEMS
If the thermocouple is open-circuit, the controller will default to the "percentage" mode. the zone will not be able to revert to normal operation. if the thermocouple is incorrectly connected, the temperature will not be controlled. The heater will stay on, forcing the temperature to over-run.
04
HEATER PROBLEMS
Heaters are pretty simple. If they get hot, they are working. if they stay cold, either the controller is not supplying power (i.e. a blown fuse or other fault), or the heater is blown. Switch off, disconnect the heater and check for resistance with a multi-meter.
05
OTHER PROBLEMS
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We don't encourage unqualified personnel doing PCB repairs. PC boards are easily damaged, and the circuit contains static-sensitive components. in addition, special equipment is required to calibrate our controllers. No one else has this equipment!